Knipex 4621A01 External Angled Retaining Ring Pliers 5-Inch For easy fitting of external circlips. For rings 3 - 10 mm in diameter. Tips are forged outward and are used for installing rings on the outside of a shaft or groove. Forged from chrome vanadium electric steel and designed to minimize tip breakage, and offer extended tool life. Plastic coated handles.